skunit MCP Server

From the README

# skUnit

**skUnit** is a semantic testing framework for .NET — write AI tests in **plain Markdown**, run them with **xUnit, NUnit, or MSTest**.

Test anything that talks to AI:
- **AI Agents** (Microsoft Agent Framework, A2A)
- **IChatClient** (Microsoft Extensions AI)
- **MCP servers** (Model Context Protocol)
- **Custom AI integrations**

```bash
dotnet add package skUnit
```

## Quick Start

Imagine you have an `AIAgent` configured to answer questions about a bank account. Here's a test scenario in Markdown, `balance-test.md`:

````markdown
# SCENARIO Balance Test

## [USER]
What is the account balance for John Doe?

## [ASSISTANT]

### ASSERT SemanticCondition
The answer mentions that the account balance is $1,234.56.
````

And the C# test:

```csharp
[Fact]
public async Task SimpleTest()
{
    var markdown = File.ReadAllText("balance-test.md");
    var scenario = ChatScenario.Parse(markdown);

    await agent.RunAsync(scenario);
}
```

That's it. skUnit drives the conversation, c